rear view mirror wires...
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TECH Apprentice
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From: aurora, colorado
rear view mirror wires... i have some lights that i want to splice into the courtesy lamps (when the car is unlocked they come on) is there a specific wire that controls that and then one that powers the switches? i see one white one blue and white and the blk ground...any help?
Joined: Nov 2003
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From: Jacksonville, FL (originally from Toronto Canada)
You need to use the blue with white wire for power and the white wire for ground. The BCM controls the courtesy lights by turning the power on and off through the blue/white wire and varying the ground through the white wire (for the theater dimming effect). The black wire goes directly to ground - if you use it to ground your lights, they will be on all the time (or at least until the battery saver function takes over about 10 minutes after turning off the car).
